Slit Widths for 4x5 Double Slit/Zone cameras

(camera in landscape orientation)

VERTICAL SLIT/ZONE IN FRONT:

	A:B	minimum width in inches
		vertical	horizontal
	1:2	3.75	2.32
	2:3	1.88	1.55
	3:4	1.25	1.16
	4:5	0.94	0.93

HORIZONTAL SLIT/ZONE IN FRONT:

	A:B	minimum width in inches
		vertical	horizontal
	1:2	1.88	4.63
	2:3	1.25	2.32
	3:4	0.94	1.55
	4:5	0.75	1.16

Slit Widths for 2 1/4 x 2 3/4 (6x7)

VERTICAL SLIT/ZONE IN FRONT:

	A:B	minimum width in inches
		vertical	horizontal
	1:2	2.37	1.38
	2:3	1.19	0.92
	3:4	0.79	0.67
	4:5	0.60	0.56

HORIZONTAL SLIT/ZONE IN FRONT:

	A:B	minimum width in inches
		vertical	horizontal
	1:2	1.19	2.76
	2:3	0.79	1.38
	3:4	0.60	0.92
	4:5	0.48	0.67

Once you have made the camera you can re-orient to portrait.